Space Time Trellis Code (STTC) is a technique that can be used to improve the performance of
the Orthogonal Frequency Division Multiplexing (OFDM) system over wireless channels by
providing both coding gain and diversity gain. STTC is combined from two codes, Trellis Code
Modulation (TCM) as an inner code and Space Time Block Code (STBC) as an outer code. TCM
which combines the choice of a modulation scheme with that of a convolutional code provides the
coding gain, and the other code provides the diversity gain. Simulation is done over flat fading and
frequency selective Rayleigh fading channel for Eight Phase Shift Keying (8-PSK) TCM. It found
that the best results are obtained for the case of two tra
يهدف البحث الحالي الى التعرف على 1-الفن الجرافيتي. 2-الفن الرقمي وتأثيرهما على الاقمشة المطبوعة
إعتمد الباحث المنهج الوصفي - التحليلي والمنهج التجريبي نظراً لأنه الانسب مع توجيهات البحث الحالي، اذ يتكون مجتمع البحث من (25 ) عينة تم اختيارها بشكل قصدي، وتم أختيار عينة البحث قصدياً من المجتمع الكلي والبالغ عددها (3) نماذج تصميمية أي بنسبة (8.3%) وذلك للتشابه والتكرار من مجتمع البحث، وتم أعداد استمارة محاور التحليل
يهتم البحث بمشكلة السلوك الاناني لدى اطفال الروضة من خلال التحقق من اهدافه في تعرف السلوك الاناني لدى اطفال الروضة والفروق بين الاطفال في متغير الجنس، وقد شمل مجتمع البحث اطفال الرياض الحكومية في محافظة بغداد بجانبيها الكرخ والرصافة للعام الدراسي ( ٢٠٢٣_ ٢٠٢٤) ، وبعد بناء مقياس السلوك الاناني حسب الخطوات لبناء المقياس وبعد عرض الاختبار على مجموعة من الخبراء المتخصصين في مجال رياض الأطفال لبيان صلاحية فقرات
... Show Moreيستهدف البحث الحالي التعرف الى:
- اليقظة الاخلاقية لدى (طلبة الجامعة) أفراد عينة البحث الحالي.
- أي القيم الاخلاقية الاكثر شيوعاً وفق رأي (طلبة الجامعة) افراد عينة البحث الحالي.
- دلالة الفروق الاحصائية في اليقظة الاخلاقية لدى (طلبة الجامعة) افراد عينة البحث الحالي على وفق متغيرات الجنس (الذكور والإناث)، والتخصص (العلمي والإنساني)، والمرحلة الدراسية
(الاولى، والثانية، والثالثة والرابعة
... Show MoreThe research was conducted in the Southern Green Belt Project within the center district of the holy city of Karbala to evaluate its environmental impact and efficiency in reducing air pollutants emitted from the industrial area adjacent to the study area. The pollution attenuation factor (Af ) was used to measure the effects of the green belt on impeding air pollutants. Measurements were taken every season from winter 2023 to Autumn 2024. The results showed that the best impedance of the green belt is when the wind speed increases in the Spring, as 7 out of 12 pollutants were impeded, and its efficiency decreased as the wind speed decreased. In general, The green belt demonstrated weak performance in impeding pollutants, As no significa
... Show MoreKinetic experiments were performed to induce of the green methyl dye adsorption from aqueous solution on the bauxite clay. This study includes determination of the adsorption capacity of bauxite clay to methyl green dye adsorption and study the effect of some parameters ( temperature , time ) on the kinetic of the adsorption process of the dye were studied. Quantity of dye adsorbed was increased when the temperature increases from 298 to 318K which indicates that methyl green adsorption processes are endothermic nature . In order to describe the kinetic data and the rate adsorption constants of the pseudo-first-order and second-order kinetics were used . The kinetics data were applied well
... Show MoreAfrican countries are among the countries in the world that suffer from the phenomenon of child recruitment in wars and conflicts. There are many reasons behind it, including the nature of the human formation of children, the societal violence to which they are exposed, lack of access to education, economic hardships, as well as the role of African wars and conflicts and other reasons that compelled children to join armed groups and participate in military operations. The recruitment of children is divided into two types, compulsory and voluntary, and this leads to many humanitarian and security repercussions that are not limited to a specific period of time but extend to subsequent generations, and due to its seriousness, t
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Research Summary
The doctrine of belief in the Last Day is one of the pillars of faith, and the doctrine of resurrection and reckoning are part of this day.
Belief in the Last Day puts a person in constant control over himself, as this control creates in this person happiness and a decent life, and he renounces the world and turns away from all vices and adorns all virtues.
On the other hand, we find that the person who does not believe in this day does not stand before his eyes anything that prevents him from doing injustices and corruption in the land. The doctrine of belief in the Last Day alone is
... Show MoreMass transfer correlations for iron rotating cylinder electrode in chloride/sulphate solution, under isothermal and
controlled heat transfer conditions, were derived. Limiting current density values for the oxygen reduction reaction from
potentiostatic experiments at different bulk temperatures and various turbulent flow rates, under isothermal and heat
transfer conditions, were used for such derivation. The corelations were analogous to that obtained by Eisenberg et all
and other workers.
The Isolated Combustion and Diluted Expansion (ICADE) internal combustion engine cycle combines the advantages of constant volume combustion of the Otto cycle with the high compression ratio of the Diesel cycle. This work studies the effect of isolated air mass (charge stratification) on the efficiency of the cycle; the analysis shows that the decrease of isolated air mass will increase the efficiency of the cycle and the large dilution air mass will quench all NOx forming reactions and reduce unburned hydrocarbons. Furthermore, the effect of Fuel / Air ratio on the efficiency shows that the increase of Fuel / Air ratio will increase efficiency of the cycle.
The current study aims to investigate the second cycle students’ motives for using electronic games in Oman. The sample consisted of (570) students, (346 males and 224 females). The participants completed an open-ended question which was analyzed based on ground theory. The results showed that (46.820%) of the males and (77.678) of the females played electronic games for pleasure, entertainment, and fun. This first category of motivation got the highest percentage of frequency (58.947%). The motive to become a hacker, a popular YouTuber got the lowest percentage (2.280%). Other students’ motives toward playing electronic games included: filling the leisure time, overcoming boredom, feeling adventures, getting science fiction and chal
... Show MoreAlthough a great deal of works has been done on the area of capital structure and dividend policy, there is still insufficient knowledge of how these policies affect stock prices. This shortcoming may have been originated from the separation between both policies when investigating their effect on stock prices. Based on this point, this research adopts a new technique (completely randomized design), to combine the effect of capital structure and dividend policy on stock prices rather than separating between them. The study used panel based regression analysis depending on the sample of 30 service and industrial Jordanian firms for the period of 2001-2010. The result of test hypotheses found the following; 1) dividend payout has a
... Show MoreThe effect of superficial gas velocity within the range 0.01-0.164 m/s on gas holdup (overall, riser and down comer), volumetric oxygen mass transfer coefficient, liquid circulation velocity was studied in an internal loop concentric tubes airlift reactor (working volume 45 liters). It was shown that as the usg increases the gas holdup and also the liquid circulation velocity increase. Also it was found that increasing superficial gas velocity lead to increase the interfacial area that increases the overall oxygen mass transfer coefficient. The hydrodynamic experimental results were modeled with the available equations in the literature. The predicted data gave an acceptable accuracy with the empirical data.
The final
... Show MoreA Genetic Algorithm optimization model is used in this study to find the optimum flow values of the Tigris river branches near Ammara city, which their water is to be used for central marshes restoration after mixing in Maissan River. These tributaries are Al-Areed, AlBittera and Al-Majar Al-Kabeer Rivers. The aim of this model is to enhance the water quality in Maissan River, hence provide acceptable water quality for marsh restoration. The model is applied for different water quality change scenarios ,i.e. , 10%,20% increase in EC,TDS and BOD. The model output are the optimum flow values for the three rivers while, the input data are monthly flows(1994-2011),monthly water requirements and water quality parameters (EC, TDS, BOD, DO and
... Show MoreAttention is one of the mental processes of knowledge that play an important role in the life of the individual in general and the child's life, in particular, the child relates to the external environment through its interaction with it, to achieve the adjustment with his environment and harmony with his community.
Much ness and multiplicity of information sources make the child need to scan and exploration to provide the appropriate response by handling sensory stimuli involving the discovery of stimulus and receive it by sensory devices then pay attention to it and realizing and storing it in memory and restoring it in the next positio
... Show MoreClass consciousness represents its highest stage in the contemporary Marxist thought of Rosa Luxemburg and Antonio Gramsci, not just a reflection of reality, but rather a dialectical form through the reflection of consciousness on reality and its reproduction. The superiority over the infrastructure (historical materialism) promised the revolutionary class consciousness to be achieved spontaneously, and the seeds of a breakthrough are mass strikes, denying the role of the party to organize this awareness, limiting its role to the interconnection between classes, emphasizing the role of socialist democracy as a conscious vanguard for organizing spontaneity, struggle, and developing awareness during the revolutionary process and the leader
... Show MoreThe study aimed at interpreting the role of architectural design quality in in build competitiveness model in accordance with the proposal included the idea of architectural design quality for its removal; interesting design factors of the environment, good design of the spaces, and design aesthetic explanatory variable. The competitiveness dimensions; the level of innovation, stimulate research, and the quality of the company's products, and activating the role of human resources, entrepreneurship, profitability, market share and competitiveness, variable responsive. The study of construction companies in the Ministry of Housing and Construction has taken the Iraqi society for the study. The sample consisted of (48) manage
... Show MoreTurkey Consider Tigris and Euphrates rivers as a national rivers, and not an a International rivers, so that . It insists on its absolute sovereignty on that resources. The block ( levee ) which Turkey established should not create International problems.
The All International agreements and laws in this sect warrant the rights of all the states that located in river stream to use it without any consider to the regional absolute right.
During the 1980s, Turkey construct water projects, started with GAP, project which is one of the greatest project in the world, in spite of the plane of construct of the keep an levee on the Euphrates was pre of that project. The
... Show Moreملخّص البحث
هذا البحث مستل من رسالة ماجستير اشرفت عليها وهو (المستوى الدلالي في شعر معن بن اوس المزني ومحتواه :
اولا: اللفظ والمعنى : علما ان اللفظ والمعنى من المسائل التي بحثها البلاغيون واللغويون القدامى والمحدثون حيث كثرت الاراء بين اتحاد اللفظ والمعنى وبين فصلهما .
ثانيا: التضاد : وهو مايقع على الشيء وضده في المعنى .
ثالثا: الترا
... Show MoreA legal discourse in the Qur’an and Sunnah is almost devoid of the use of one of the general formulas, and due to its frequent rotation in the tongue of the legislator, the formulas may overlap their members in apparently contradictory provisions, which makes the individual from the general members appear to the beholder to be covered by two contradictory provisions, and this research came to present what might happen to him The legal text interpreter of weighting between the two opposing texts is the strength of the generality that is established by the generality formula, so the two strongest formulas in the inclusion of its members outweigh the weaker of them and precede them, and the research decided that the formulas vary
... Show MoreThis study was conducted on a sample of commercial banks in Iraq, chosen according number of considerations for twenty banks, contained two public banks and eighteen private banks. &
... Show MoreThe study aims to identify the impact of competency-based training in its dimensions (skills, cognitive abilities, attitudes, and attitudes) in improving the performance of employees (achievement, strategic thinking and problem solving) in Jordanian university hospitals.
The study based on analytical descriptive method. The study population consisted of the Jordanian University Hospitals, the University Hospital of Jordan and the King Abdullah Hospital, as applied study case. The sample of the study consists of all upper and middle administrative employees of these hospitals; questionnaire distributed all of them and the number of valid questionnaires for analysis were 182 questionnaire.
... Show MoreHemorrhoids are one of the most common surgical conditions. The hemorrhoid may cause symptoms that are: bleeding, pain, prolapse, itching, spoilage of feces, and psychologic discomfort. There are many methods for treatment of hemorrhoid like, medical therapy, rubber band ligation, electerocoagulation, stapled hemorrhoidpexy, photocoagulation, sclerothereapy, doppler guided artery ligation, Cryosurgery, and surgery. All methods for treatment of hemorrhoids have advantages, disadvantages, and limitations. Conventional haemorrhoidectomy was the traditional operation for the treatment of hemorrhoids. But recently other modalities of treatment had been used as an alternative operations including CO2 laser haemorrhoidectomy. This work aims to
... Show MoreThis paper deals with the most important subject of transaction Fiqh, it is (AL-Dabh )book. this search high lights ruling on eating slaughter source; Scholars were elaborate sacrifices and the conditions they have set for the slayer and the sacrifice and machine of slaughter; and Fatwas contemporary scholars، scientists and fatwas jurisprudence academies showed the ways that modern slaughter which appeared in our town or in meat exporting meat from Western countries، to find out the end of the search statement of ruling the meat that do not know the source and do not know how they were slaughtered; The subject acquired its importance to the fact that the slaughter is not the normal things that the human act whatever he wan
... Show MoreThe increasing efficiency of the telecommunications network in the city contributes to the increase in spatial interaction between activities (to influence and mutual influence) This study is based on the idea that the upgrading of telephone services provided to citizens are done exclusively through the growth and development of all levels of the service using advanced technologies to know the problems and appropriate solutions in short time and less cost. Thus, crystallized the objectives of the study which was built for the importance of GIS in the planning of services in general, and infrastructure services, in particular, including telephone services, which is represent a point of contact between individuals on the one hand a
... Show MoreOne of the most important problems facing the world today is the energy problem. The solution was in finding renewable energy sources such as solar energy. The solar energy applications in Iraq is facing many problems . One of the most important problems is the accumulation of dust on the solar panels surface which causes decreasing its performance sharply. In the present work, a new technique was presented by using two-axis solar tracking system to reduce the accumulated dust on the solar panel surface and compared it with the fixed solar panels which installed at tilt angles 30° and 45°. The results indicated that the maximum losses of the output power due to accumulation of dust on the fixed solar panels is about 31.4% and 23.1% res
... Show More- S. Eliot is one of the important founders of the modernist movement in literature, a cutting-edge poet of the first order. After his 1927 conversion to Anglicanism, he began calling himself a conservative, royal, and a classicist.
"Ash Wednesday" is the first long poem written by him after his conversion. It deals with the struggle that ensues when one who has lacked faith acquires it. It is richly but ambiguously allusive, and deals with the aspiration to move from spiritual barrenness to hope for human salvation.
"Ash Wednesday" not only struggles with an approach to faith but with an approach to a language capable of expressing it. Eliot's style is different from that that predates his conve
ان الموازنة بصورة عامة هي خطة عمل تعدها الحكومة وتعمل على تقديمها الى السلطة التشريعية لغرض اقرارها ، وتترجم فيها سياستها الاقتصادية والاجتماعية الى اهداف سنوية رقمية . ولغرض معرفة فعالية الموازنة العامة فلا بد من ان ترتبط بادوات التخطيط المالي الاخرى كسياسة التسليف وسياسة النقد الاجنبي وتقاس بالنتائج الاقتصادية والاجتماعية وليس بالنتائج المالية فقط .
ولتجنب القصور الذي رافق الموازنة بسبب
... Show Moreتتكون شركات المساهمة غالبًا من فئتين من المساهمين هما الأغلبية والأقلية, ويقصد بالفئة الأولى (المساهمين الأغلبية) المساهمين المسيطرين على رأس مال الشركة ومجلس إدارتها والتصويت بإجتماعات هيئتها (جمعيتها العامة) دون الفئة الثانية (المساهمين الأقلية), خاصةً عمليات الاستحواذ ومخاطرها على الشركة, وعليه نجد أن المشرع المصري قد أوجد حماية قانونية لأقلية من هذه المخاطر, من خلال إجبار الطرف المستحوذ بتقديم عرض شرا
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